Eye Mechanism
Trending Questions
Q.
Question 2
We can see a non-luminous object when the light
(a) emitted by the object falls on the eye
(b) is reflected from the object towards our eye
(c) completely passes through the object
(d) gets completely absorbed by the object
Q. Draw a labelled sketch of the human eye.
Q. We can see a non-luminous object when the light ________.
- emitted by the object falls on the eye
- is reflected from the object towards our eye
- completely passes through the object
- gets completely absorbed by the object
Q.
How does our brain interpret the image that is formed on the retina?
Wherever light falls that area becomes hot and thus by measuring the difference in hotness image is formed.
Light sensitive cells on retina get activated wherever light falls and generate electrical signals which are sent to the brain via the optic nerves.
Image is formed on the retina. we do not need the brain to interpret the image.
Cells are present in vitreous humour which help brain to perceive the image formed on retina.
Q. The size of the pupil _______ when you see in dim light.
- remains unaltered
- becomes small
- becomes large
- keeps on increasing and decreasing
Q.
Read the extract given below and answer the question that follows:
..........Winds rush to meet them.
The moon is broken like a mirror,
Its pieces flash now in the crown
of the tallest oak.
Find the word from the extract which means the same as “shine.”
Q. We can see a non-luminous object when the light ________.
- emitted by the object falls on the eye
- is reflected from the object towards our eye
- completely passes through the object
- gets completely absorbed by the object
Q. Draw a labelled sketch of the human eye.
